WELD 208 - Gas Tungsten Arc (TIG) Welding

1. Interpret welding symbols and demonstrate how they apply to shop drawings. [e,f]
2. Identify the various joint configurations and explain how they affect weld strength. [e,f]
3. Employ and practice safety procedures and practices used in the welding industry. [c]
4. Identify and describe the function of each component of a GTAW station. [e,f]
5. Identify and specify GTAW electrodes using the AWS electrode classification system. [e,f]
6. Identify and specify GTAW filler metals using the AWS filler metal classification system. [e,f]
7. Explain the effects of DCEN, DCEP, and AC current on electrode life, surface cleaning, and weld characteristics. [e,f]
8. Describe the shielding gases used for GTAW, describe their characteristics and their uses. [e,f]
9. Select the proper power source, current type, shielding gas, flow rate, electrode type and diameter, nozzle size, and filler metal. [e,f]
10. Properly assemble and adjust all variables required to produce acceptable GTA welds. [e,f]
11. Properly prepare tungsten electrodes for welding with AC or DC current. [e,f]
12. Demonstrate the use of square wave and pulse welding technology and how it applies to GTAW. [e,f]
13. Properly prepare metals for welding. [e,f]
14. Identify different types of weld defects and describe steps to prevent them. [e,f]
15. Describe welding characteristics for Mild Steel, Stainless Steel, and Aluminum and other weldable metals. [e,f]
16. Demonstrate welding on various types of metals. [e,f]
17. Demonstrate ability to read and interpret technical documents. [b,e]
18. Demonstrates ability to use various types of software applicable to course. [a]

Note: Letters following objectives correspond to ATMAE Outcomes.

COURSE CONTENT: Topical areas of study include -

• Gases used in GTA Welding
• Weld defects and discontinuities
• AWS Color and ID Code for Tungsten
• AWS visual acceptance criteria for weldments
• Electrodes
• Aluminum base metal identification
• AWS Filler metal classification
• Cleaning and preparing aluminum
• Preparation of tungsten electrodes